I forgot to mention that for the game, I decided to have the sts put their papers and books away. However, when we took up the answers to the worksheet, I wrote some of the vacab words on the board, so they could check their spelling. I left those words up throughout the game since they seemed very unfamiliar with English space terms.
Before the game began, I gave them time in their teams to complete the worksheet, but I didn't hand out dictionaries. I had them fill it in by memory from the beginning of the class, when I showed the ppt about the solar system with all the vocab words.
Update: The classes are still going well, with the exception of one pretty dead class. They really disappointed me, but I think their knowledge of space, even in Korean was pretty low.